Cherry pick GPD yield() to not block if thread is coop#2452

bjarki-andreasen merged 1 commit intonrfconnect:mainnrfconnect/sdk-zephyr:mainfrom

bjarki-andreasen:nrf-gpd-coop-fixbjarki-andreasen/sdk-zephyr:nrf-gpd-coop-fixCopy head branch name to clipboard